<fieldset style="border: 0; margin: 1em 0 0.5em 0; clear: both;">
  <section style="border-top: 2px solid red; text-align: left; padding-top: 3px;"
           tn-page-editable="richtext0" editable-type="ed-type-rich-text" tn-not-editable-attr="backgroundColor">
    <section style="display: inline-block; padding: 0 0.5em 0 0.5em; height: 2em; line-height: 2em; vertical-align: top;"
             ng-style="{
              'font-size': eo.fontSize,
              'font-family': eo.fontFamily,
              'font-style': eo.fontStyle,
              'font-weight': eo.fontWeight,
              'text-align': eo.textAlign,
              'text-decoration': eo.textDecoration,
              'color': eo.color,
              'background-color': (eo.borderColor || theme.majorColor) }"
             tn-rich-text-content>
      标题
    </section><section style="width: 0; display: inline-block; vertical-align: top;
                border-left: 0.8em solid #CCCCCC;
                border-top: 1em solid #CCCCCC;
                border-right: 0.8em solid transparent !important;
                border-bottom: 1em solid transparent !important;"
     ng-style="{
              'font-size': eo.fontSize,
              'font-family': eo.fontFamily,
              'font-style': eo.fontStyle,
              'font-weight': eo.fontWeight,
              'text-align': eo.textAlign,
              'text-decoration': eo.textDecoration,
              'border-left-color': (eo.borderColor || theme.majorColor),
              'border-top-color': (eo.borderColor || theme.majorColor) }"></section>
  </section>
</fieldset>